bloomfield



3 Sheets-Sheet; l.

(No Model.)

S. BLOOMPIELD & C. F. CLARK.

' SRAM RUBBING MACHINE. No. 393 351. Patented Nov. 27, 1888.

a \/\/|T|\1 59959: VNVENTEIRS,

Sami/S loamfelol., Cina?. F'- Clark I3) gw@ my fcmp N. PETERS.PnMeLimugmpr-cr. waulnmun. uc.

(No Model.) 3 Sheets-Sheet S. BLOOMFIELD 83 G. I. CLARK. 33AM RUBBINGMACHINE No. 393,351. Patented NW2?, 1333.

WITNESSESII NVENTU S,

PETERS, Photo-mhognpher, vll-ningun. D.C.

(No Model.) 3 Sheets-*Sheet 3. S. -BLOOMFIELD 8;; C. F. CLARK.

SRAM RUBBING MACHINE,

Patented v .v www.:

NVU,

TD 1i Chas F @IdF/(fl EWS ffl-24u,

wf n 7., W

' `rrnn STATES Param* rre.

SAMUEL BLOOMFIELD AND CHARLES CLARK, OF LYNN, MASSACHUSETTS, ASSIGNORSTO FRANK E. WRIGHT AND CHARLES H. WARD, OF SAME PLACE.

SEAIVI=RUBBING MACHINE.

SPECIFICATION forming part of Letters PatentNo. 393.351, dated November2'7, 1888.

(No model.)

T0 @ZZ whom, it may concern:

Be it known that we, SAMUEL BLoonFlELD and CHARLES F. CLARK, both ofLynn, in the county of Essex and Commonwealth of Massachusetts,haveinvented certain Improvements in Seam-Rubbing Machines, of which thefollowing, taken in connection with the accom panying drawings, is aspecification.

y This invention relates to that class of machines commonly employed inmanufacturing boots and shoes for the purpose of rubbing down seams.7

The nature of this invention is fully described and specically claimedhereinafter.

Referring to the drawings, Figure 1 isaside elevation of the machineembodying this invention. Fig. 2 is an end elevation of the Inachine.Fig. 3 shows the slide which carries the rubbing-tool holder in planview, together with a portion of one of the main shafts and theconnection thereto. Fig. 4 is a View of a section on line 4 4, Fig. 2.Fig. 5is a vertical section on line 5 5; Fig. 1.

In the drawings, A represents the supporting-frame, in which arejournaled the two shafts Aand B. These shafts are connected byintermediate gearing, n n a, as represented in Fig. l ofthe drawings. Onthe end of the shaft B is a fixed wheel, h, that turns with the shaft Band constitutes the supporting-bed for the material to bear upon whilebeing rubbed. In the end of shaft A is an eccentric-pin, f, thatoperates a pitman, I1, and reciprocates the slide c, which slide ismounted in a suitable supportingblock, and said block is xed upon themachine-frame, all as more particularly shown in Fig. 3 of the drawings.The block or slide e is further constructed to carry the tube d, and inthe bottom end of this tube is inserted the rubber a. (See Fig. 5.) Thetube also contains a coil or spiral spring, 7c, which operates to pressthe rubber downward and hold it upon the material with sufficientpressure to open and compress the edges of the scam, and the tension ofthe spring may be varied and modified by suitably adjusting theplunger-boltm. rl`he method'of adjusting the bolt is obvious. Ve havedemonstrated by actual working of the machine that the results ob- Inthe end of the machine-head is a socket Y or suitable hole to receivethe plunger-rod 4, which is employed as a support for deviceshereinafter referred to. The bolt 5 (see Fig. 4) passes horizontallythrough the bottom end ofsaid plunger 4 and supportsthe rear ends of thearms 6 6. Saidarms havein their forward ends, respectively, a bolt, 7 7,on which are loosely mounted the respective wheels 8 8, as shown. rIhewheels 8 8 are designed to' bear upon the material at each side of therubbingtool and co-operate with work-supporting wheel h to move forwardthe material. To this end the wheels 8 S are beveled conformably to thesides of the work-supporting wheel, and are located one on each side ofthe rubbingtool, as fully shown in said Fig. 4. The wheels 8 Sarepressed constantlydownward by springs 9 9, which springs are fixed uponand supported by the machine-frame, and, reaching downward and forward,respectively, bear upon the arms 6 6 with yielding pressure,and alsoconnected to the end of the plunger 4 is a foot, l0, that, extendingdownward and forward, as shown, bears upon the material just in frontofthe rubbing-tool, and in the socket or hole above the plunger is aspiral spring, l2, that operates to force the plunger downward withyielding pressure.

In operation the workman places the material upon the wheel h and movesit forward. The edges of the seam are first opened and laid over bymeans ofthe foot l0. The overturned edges next pass under the wheels 88, and the rubbing-tool operating between the wheels 8 8 rubs down,compresses, and tlattens the seam while the material is fed forward. Theparticular construction shown in the drawings and thus far describedrepresents the wheels 8 8 as each mounted on a separate supporting arm,the arms being pressed downward by independent springs 9 9, andconsequently capable of yielding upward independently of each other. Wehave employed this construction with most satisfactory results. We findthat each wheel bears regularly upon the material, adapts itself readilyto the varying thicknesses of the material, and we believe this to bethe best way of constructing the arms and wheels.

W e do not continc ourselves to the precise details of arrangement ofthe operating parts, as these may be varied as mechanical skill maydictate.

Ve do not consider it necessary to have the foot 10 composed of springmaterial; but in inanykinds of work it seems advisable to have itslightly yielding.

Having thus described our invention, we claim and desire by LettersPatent to securel. In combination,the support for the work, as h, theblock and head secured to the frame, the slide c, adapted to reciprocatetherein, carrying the rubbing tool, the shaft A, having cani j' securedthereto, and thepitman connecting the slide and cani, substantially asdescribed.

2. In aseam-rubbing machine, and in combination, a supportingwheel, ash, for the work, a slide, as e, adapted to reciprocate in asubstantially straight line, means for giving said slide its movement,and a rubbing-tool, substantially as deseribed,carried by the slide.

3. In a seanrrubbing machine of substantially the constructiondescribed, and in combination, the wheels S S, arms for supporting thewheels, said arms being extended rearwardly and connected to avertically-movable plunger, 4, a spring for pressing the plungerdownwardly and springs for pressing the arms downwardly/,ei supportingbed or wheel for the 4o material, a rnbbingtool, and a presser-footcarried by the plunger and arranged to bear upon the material in frontof the rubbingtool, substantially as described.

1. In combination,the support for the work, as h, the rubbing-tool, theplunger 4, supported by the machinefrainemhe presser-foot, as 10,supported by the plunger, the wheels 8, also carried by theplunger,connected thereto by arms hinged or pivoted to the plunger, aspring for pressing the plunger and presserfoot downward, and a springfor pressing the wheels downward independent of the plunger andpresser-foot, substantially as described.

5. In a machine of substantially the ecnstruction described,ineombination,the wheels 8 8, arms for supporting the wheels, said armsbeing extended rearwardly and hinged or jointed independently of eachother to the vertically-movable plunger 4, a spring for pressing theplunger downward, and separate springs for pressing downward the arms, awheel or bed for supporting the material, a rubbing-tool, and aprcsserfoot arranged to bear upon the material in front oftherubbingtool, substantially as described.

6. In combination, a suitable support, as 7i, the rubbing-tool, thewheels 8, arranged to act upon either side ofsaid support, and means,substantially as described, forsupportingsaid wheels and permitting themto have movement toward and from the support independent of each other,substantially as described.

S. BLOOMFIELD. CHARLES F. CLARK. Witnesses:

Gv. AUsTIN, C. B. TUr'rLn.

